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Fencer Vulns
high 7.1

CVE-2026-80183 json

In OpenStack Keystone before 29.0.3, any authenticated user holding role:reader on any project can list every project-scoped role assignmen…

published 2026-08-26 2 mo ago modified 2026-09-09 2 mo ago also EUVD-2026-66818

cvss
7.1
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 32%
public exploits
0
none known

Summary

In OpenStack Keystone before 29.0.3, any authenticated user holding role:reader on any project can list every project-scoped role assignment under any domain by passing a domain ID as scope.project.id with include_subtree to the GET /v3/role_assignments endpoint. The domain's project record has domain_id=null, causing the policy domain_id check to pass for any caller. With include_names, the response discloses the names and home-domain IDs of every user, group, project, and role involved. The literal "default" domain ID works against any deployment created with keystone-manage bootstrap. An attacker can harvest domain IDs from the response and repeat the query to map role assignments across the entire cloud. This is caused by misuse of "None" in

list_role_assignments_for_tree.

Patch / fix

  • OpenStack Keystone 27.0.3, 28.0.3, 29.0.3
  • keystone Debian 12 2:22.0.2-0+deb12u4
  • keystone Debian 13 2:27.0.0-3+deb13u5
  • keystone Debian 14 2:29.0.2-2

debian advisories DEBIAN-CVE-2026-80183

  • keystone Ubuntu 22.04 LTS 2:21.0.1-0ubuntu2.6
  • keystone Ubuntu 24.04 LTS 2:25.0.0-0ubuntu1.6
  • keystone Ubuntu 26.04 LTS 2:29.0.0-0ubuntu1.4
  • keystone Ubuntu Pro 20.04 LTS 2:17.0.1-0ubuntu2+esm2

ubuntu advisories UBUNTU-CVE-2026-80183

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-80183 updated cvss 6.5

keystone: OpenStack Keystone: Information disclosure via improper handling of domain IDs in role assignment listings

  • Red Hat OpenStack Platform 13 (Queens) rhosp13/openstack-keystone Red Hat OpenStack Platform 16.2 python3-keystone, openstack-keystone, rhosp-rhel8/openstack-keystone Red Hat OpenStack Platform 17.1 python3-keystone, openstack-keystone, rhosp-rhel9/openstack-keystone Red Hat OpenStack Platform 18.0 openstack-keystone
    affected: workaround, no fix available

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 mo ago

Exploit prediction

0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N
CNA 4.0 7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • OpenStack Keystone

Classification

Weakness
  • CWE-843 Access of Resource Using Incompatible Type

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.